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Polyethylene adhesion: Pretreatment with potassium permanganate
Author(s) -
Costa Ricardo Aurélio Da,
Gonçalves Maria Do Carmo,
Oliveira Marcelo Ganzarolli De,
Rubira Adley Forti,
Galembeck Fernando
Publication year - 1989
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1989.070371104
Subject(s) - low density polyethylene , epoxy , potassium permanganate , polyethylene , materials science , composite material , adhesion , adhesive , polymer , layer (electronics) , chemistry , organic chemistry
Two major events occur in the modification of polyethylene (PE) surfaces by treatment with acidic KMnO 4 solutions: The polymer surface is coated with a porous MnO 2 layer and corroded, by oxidation. In both cases the resulting surfaces may be bonded with epoxy; the average peeling force for LDPE/epoxy/LDPE adhesive joints thus obtained may reach > 1.6 kN m −1 and is limited by adherend cohesive failure. Modified LDPE surfaces and disassembled joints were examined by transmission and ATR‐IR spectrophotometry, to show that corroded, nonwettable LDPE contains appreciable amounts of polar groups, reactive towards epoxy amine components.